Biologists have long debated why some plants and animals can adjust to a wide range of climates, while others can't.

The breeding range for the Bohemian waxwing (purple) extends over a large swath of the Arctic, while the chestnut-crowned laughingthrush (red) inhabits a much smaller arc in Asia centered on Nepal and ...

Large bird brains and ranges are insufficient in the fight against climate change. Learn the species of bird susceptible.

Biologists have long debated why some plants and animals can adjust to a wide range of climates, while others can't.

The cedar waxwing is easily found in open habitat where there are berries. It times its nesting to coincide with summer berry production, putting it among the latest of North American birds to nest.